This isn't really a guide for NMG as of right now, just chicken-scratch notes I made for when me and sam raced this. Below are the notes we used, soon I expect to write a more fuller guide/notes like I have previously for glitchless but for now I wanted to have something public to work off of that isn't just my run:
-do the funny at the beginning, get baggie
-get shield and do nameless castle
-do d1 glitchless style
-get flambo glitchless style
-clip oob with transition clip on tree and rock near enchiridion stone west of magic man's house
-walk underground to area transition near d2, enter and come back
-enter d2, grab key and dynoblast
-get gauntlets, block clip, go to boss door (Guide for Crystal Guardian: https://docs.google.com/spreadsheets/d/1szI_DTXcEiymH22QkdhyKnQYbrZhpxK603F_Ft4Nwp4/edit?usp=sharing)
-go to d3
-get dynoblast and blow up hole in topleft room, get bk and rainicorn ring
-block clip, go up stairs, enter 2f
-jake clip, pressure plate, enter and beat d3
-lsp dungeon
-transition clip to enter nightmare castle
-jake clip to hit pressure plate in middle of room
-hit paddle at top left, enter room on the left from the bridge, enter 2f
-jake clip for boss key, nightmare princess